JP2522775B2 - Scroll fluid machinery - Google Patents

Scroll fluid machinery

Info

Publication number
JP2522775B2
JP2522775B2 JP61281092A JP28109286A JP2522775B2 JP 2522775 B2 JP2522775 B2 JP 2522775B2 JP 61281092 A JP61281092 A JP 61281092A JP 28109286 A JP28109286 A JP 28109286A JP 2522775 B2 JP2522775 B2 JP 2522775B2
Authority
JP
Japan
Prior art keywords
scroll
base plate
oil supply
supply hole
orbiting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP61281092A
Other languages
Japanese (ja)
Other versions
JPS63134890A (en
Inventor
貴寛 田村
和夫 櫻井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP61281092A priority Critical patent/JP2522775B2/en
Priority to KR1019870011981A priority patent/KR910002408B1/en
Priority to US07/120,098 priority patent/US4818198A/en
Priority to DE19873739013 priority patent/DE3739013A1/en
Publication of JPS63134890A publication Critical patent/JPS63134890A/en
Application granted granted Critical
Publication of JP2522775B2 publication Critical patent/JP2522775B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/025—Lubrication; Lubricant separation using a lubricant pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/02—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
    • F04C18/0207—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form
    • F04C18/0215—Rotary-piston pumps specially adapted for elastic fluids of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents both members having co-operating elements in spiral form where only one member is moving

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressor (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は空気あるいは冷媒ガスなどを昇圧するガス
圧縮機、膨張機または液体ポンプとして用いられるスク
ロール流体機械に係り、特に各軸受、各摺動部へ給油を
行う構造に関する。Description: TECHNICAL FIELD The present invention relates to a scroll fluid machine used as a gas compressor, an expander or a liquid pump for increasing the pressure of air or refrigerant gas, and in particular, each bearing and each slide. It relates to a structure for supplying oil to the parts.

〔従来の技術〕[Conventional technology]

スクロール流体機械の一例である密閉形スクロール圧
縮機の従来機の給油構造は、特開昭61−87994号に記載
のように、駆動軸を支持するフレームに設けた軸受間に
開口する給湯パイプを設けて密閉容器内の油溜りと駆動
軸外周部分を連通し、ここから駆動軸内に設けた給油孔
を介して遠心力により給油を行う構造となっていた。As described in JP-A-61-87994, an oil supply structure of a conventional hermetic scroll compressor, which is an example of a scroll fluid machine, includes a hot water supply pipe opened between bearings provided in a frame supporting a drive shaft. A structure is provided in which the oil reservoir in the closed container is communicated with the outer peripheral portion of the drive shaft, and oil is centrifugally supplied from there through an oil supply hole provided in the drive shaft.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

上記従来の給油構造は給油通路が複雑であればかりで
なく、駆動軸の外周部から駆動軸内の給油孔へ油が遠心
力によって入らない場合があり、各軸受、摺動部への給
油が不安定になる恐れがあった。The conventional lubrication structure described above is not only because of the complicated lubrication passage, oil may not enter into the lubrication holes in the drive shaft from the outer peripheral portion of the drive shaft due to centrifugal force. There was a risk of instability.

本発明の目的は簡単な構造で各軸受、各摺動部へ安定
した給油を行うことの可能なスクロール流体機械を提供
することにある。An object of the present invention is to provide a scroll fluid machine capable of stably supplying oil to each bearing and each sliding portion with a simple structure.

〔問題点を解決するための手段〕[Means for solving problems]

本発明は夫々台板およびそれと一体的な渦巻状ラップ
からなり且つ両ラップを互に噛み合せて配置された固定
スクロールおよび該固定スクロールに対して自転するこ
となく旋回する旋回スクロールと、旋回スクロールを固
定スクロールに対して旋回駆動するための駆動軸と、該
駆動軸を支持するフレームとを密閉容器内に備え、固定
スクロールの台板と上記フレームとの間に上記旋回スク
ロールの台板を摺動自在に挾持してなるスクロール流体
機械において、固定スクロールの台板内又は上記フレー
ム内に上記密閉容器内の油溜りから上記固定スクロール
又はフレームの旋回スクロールの台板との摺動部に至る
給油孔を形成すると共に、該給油孔に常に連通し且つ旋
回スクロールの中心付近に至る給油孔を旋回スクロール
の台板内に形成し、該旋回スクロールの台板内の上記給
油孔に通じる給油孔を駆動軸内に形成したことを特徴と
する。The present invention relates to a fixed scroll, which is composed of a base plate and a spiral wrap integrated with the base plate, respectively, and is arranged so as to mesh with each other, and a revolving scroll that revolves without rotating with respect to the fixed scroll, and a revolving scroll is fixed. A drive shaft for orbiting the scroll and a frame for supporting the drive shaft are provided in an airtight container, and the base plate of the orbiting scroll is slidable between the base plate of the fixed scroll and the frame. In a scroll fluid machine that is held between the fixed scroll base plate or the frame, an oil supply hole from the oil sump in the closed container to the sliding portion of the fixed scroll or the frame orbiting scroll base plate. Along with the formation, forming an oil supply hole that is always in communication with the oil supply hole and reaches near the center of the orbiting scroll in the base plate of the orbiting scroll, The oil supply hole communicating with the oil supply hole of the base in the plate of the orbiting scroll, characterized in that formed in the drive shaft.

〔作用〕[Action]

密閉容器下部の油溜りに溜っている油は、前記の固定
スクロールの台板内に又はフレーム内に形成された給油
孔を通って、該固定スクロールの台板又はフレームの旋
回スクロール台板との摺動部に至り、そこから、前記旋
回スクロールの台板内に形成された前記給油孔を通り、
そこから近傍の軸受を潤滑すると共に、前記駆動軸内の
給油孔を介して各軸受を潤滑する。The oil accumulated in the oil sump at the lower part of the closed container is transferred between the fixed scroll base plate and the frame orbiting scroll base plate through the oil supply holes formed in the fixed scroll base plate or in the frame. To the sliding portion, from there, through the oiling hole formed in the base plate of the orbiting scroll,
From there, the bearings in the vicinity are lubricated, and each bearing is lubricated through the oil supply hole in the drive shaft.

固定スクロールの台板又はフレーム内に形成された上
記給油孔の上記摺動部への開口部は、旋回スクロールが
固定スクロールに対して旋回運動（公転運動）を行なっ
ても、旋回スクロールの台板内に形成した前記給油孔と
常に連動するに足るだけの大きさを持っているように設
計されている。The opening for the sliding portion of the oil supply hole formed in the base plate or frame of the fixed scroll has a base plate for the orbiting scroll even if the orbiting scroll makes an orbiting motion (revolution motion) with respect to the fixed scroll. It is designed to have a size large enough to be always interlocked with the oil supply hole formed therein.

〔実施例〕〔Example〕

以下、本発明の一実施例を第１図、第２図により説明
する。第１図は本発明の一実施例に係る横形冷媒スクロ
ール圧縮機の全体構造を示す縦断面である。第１図にお
いて、密閉容器１内にはスクロール圧縮機構２とこれを
駆動する電動機３とが水平に配置して収納され、容器１
下方は油溜り４となされている。An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a longitudinal section showing the overall structure of a horizontal refrigerant scroll compressor according to an embodiment of the present invention. In FIG. 1, a scroll compression mechanism 2 and an electric motor 3 for driving the scroll compression mechanism 2 are horizontally arranged and housed in a closed container 1.
The bottom is an oil sump 4.

スクロール圧縮機構２は、旋回スクロール５、固定ス
クロール６、電動機３で駆動されるクランク軸をなす駆
動軸７、フレーム８、自転防止機構９よりなっている。The scroll compression mechanism 2 includes an orbiting scroll 5, a fixed scroll 6, a drive shaft 7 serving as a crank shaft driven by the electric motor 3, a frame 8, and a rotation preventing mechanism 9.

旋回スクロール５は台板（鏡板）5a上に渦巻き状のラ
ップ5bを有する。また台板5aの背面には駆動軸７のクラ
ンクピン部7aが挿入される軸受5cが設けられ、また台板
5aには圧縮途中のラップ5b空間と背圧室8cとを連通する
均圧孔5dが設けられている。The orbiting scroll 5 has a spiral wrap 5b on a base plate (end plate) 5a. A bearing 5c into which the crank pin portion 7a of the drive shaft 7 is inserted is provided on the back surface of the base plate 5a.
5a is provided with a pressure equalizing hole 5d communicating the space of the wrap 5b during compression with the back pressure chamber 8c.

容器１に固定された固定スクロール６も同様に台板6a
上に渦巻き状のラップ6bを有する。またラップ外周部に
は吸入孔6c、ラップ中心部には吐出孔6dが設けられてい
る。Similarly, the fixed scroll 6 fixed to the container 1 also has a base plate 6a.
It has a spiral wrap 6b on top. Further, a suction hole 6c is provided in the outer peripheral portion of the wrap, and a discharge hole 6d is provided in the central portion of the wrap.

容器１に固定されたフレーム８には駆動軸７を支承す
る軸受8a,8a′、旋回スクロール５を固定スクロール６
との間で挾持する台座8b、旋回スクロール５に適切な押
し付け力を与えるための背圧室8cが設けられている。The frame 8 fixed to the container 1 has bearings 8a, 8a 'for supporting the drive shaft 7 and the orbiting scroll 5 fixed scroll 6
A pedestal 8b which is held between the back pressure chamber 8c and a back pressure chamber 8c for applying an appropriate pressing force to the orbiting scroll 5 are provided.

旋回スクロール５と固定スクロール６は互いにラップ
5b,6bを内側に向けて組み合わされ、固定スクロール６
とフレーム８の台座8bとにより旋回スクロール５を挾持
する。旋回スクロールの背面とフレームの間には旋回ス
クロールの自転を防止するための自転防止機構９が設置
されている。Orbiting scroll 5 and fixed scroll 6 wrap each other
Fixed scroll 6 combined with 5b and 6b facing inward
And the pedestal 8b of the frame 8 hold the orbiting scroll 5 therebetween. A rotation prevention mechanism 9 for preventing rotation of the orbiting scroll is installed between the rear surface of the orbiting scroll and the frame.

駆動軸７は一端が前記軸受5cに支持されているクラン
クピン7aを有する。また駆動軸７内には給油孔7cが該軸
７の回転中心上に設けられている。この給油孔7cは一端
がクランクピン7aの端面に開口すると共に、給油孔7f,7
f′を介して軸受8a,8a′に開口している。The drive shaft 7 has a crank pin 7a whose one end is supported by the bearing 5c. An oil supply hole 7c is provided in the drive shaft 7 on the center of rotation of the shaft 7. One end of this oil supply hole 7c opens to the end face of the crank pin 7a, and the oil supply holes 7f, 7f
The bearings 8a, 8a 'are opened through f'.

固定スクロール６の台板6a内には、油溜り４と連通す
る給油孔6e、および該給油孔6eと連通し旋回スクロール
５の台板5aと固定スクロール６の台板6aとが摺動する部
分に開口する給油孔6fが設けられている。また旋回スク
ロール５の台板5a内には、軸受5cの端面と台板5aの外周
とを連通する給油孔5eが設けられ、該給油孔5eの外端部
はネジ10で塞がれている。該給油孔5eの内端は前記駆動
軸７中の給油孔7cと対向している。また台板5aの固定ス
クロール６の台板6aとの摺動部には前記給油孔5eと固定
スクロール６内の前記給油孔6fとを連通する給油孔5fが
設けられている。In the base plate 6a of the fixed scroll 6, an oil supply hole 6e communicating with the oil sump 4 and a portion in which the base plate 5a of the orbiting scroll 5 and the base plate 6a of the fixed scroll 6 communicate with the oil supply hole 6e and slide. An oil supply hole 6f opening to the is provided. Further, in the base plate 5a of the orbiting scroll 5, an oil supply hole 5e that connects the end surface of the bearing 5c and the outer periphery of the base plate 5a is provided, and the outer end of the oil supply hole 5e is closed by a screw 10. . The inner end of the oil supply hole 5e faces the oil supply hole 7c in the drive shaft 7. Further, a sliding portion of the base plate 5a with respect to the base plate 6a of the fixed scroll 6 is provided with an oil supply hole 5f which communicates the oil supply hole 5e with the oil supply hole 6f in the fixed scroll 6.

上記給油孔の配置関係の拡大図を第２図に示す。旋回
スクロール５の旋回運動によって給油孔5fの中心はクラ
ンクピン7aのクランク半径、すなわち旋回スクロールの
旋回半径と同じ半径で旋回運動を行なう。一方給油孔5f
の孔の半径と給油孔6fの半径を足した長さは上記給油孔
5fの旋回運動の半径以上としてあり、これにより、旋回
スクロール５の旋回運動中常時給油孔5fと6fは連通する
構造となっている。FIG. 2 is an enlarged view of the arrangement of the oil supply holes. By the orbiting motion of the orbiting scroll 5, the center of the oil supply hole 5f performs the orbiting motion with the crank radius of the crank pin 7a, that is, the same radius as the orbiting radius of the orbiting scroll. Meanwhile, oil supply hole 5f
The sum of the radius of the hole and the radius of the oil supply hole 6f is the above
The radius is larger than the radius of the orbiting motion of 5f, and as a result, the oil supply holes 5f and 6f are always communicated with each other during the orbiting motion of the orbiting scroll 5.

次に前記スクロール圧縮機の作用について説明する。
電動機３により駆動軸７が回転すると、クランクピン7a
の回転運動および自動防止機構９の作用により旋回スク
ロール５は自転することなく旋回運動を行なう。この結
果、旋回スクロール５と固定スクロール６のラップ5b,6
b及び台板5a,6aで形成される空間は中心に移動しつつそ
の容積を減少し、吸入孔6cより吸入したガスを圧縮し、
吐出孔6dより吐出する。吐出されたガスは固定スクロー
ル６の台板6aおよびフレーム８に形成した通路11を通っ
て電動機３を冷却した後、吐出管1cより吐出される。ス
クロールが圧縮作用を行うと旋回スクロール５と固定ス
クロール６を離そうとする力が作用するので、これを防
止するため、旋回スクロールの背面の背圧室8c内の圧力
は、均圧孔5dにより、吐出圧力より低く、吸入圧力より
高い圧力（中間圧力）に保たれる。Next, the operation of the scroll compressor will be described.
When the drive shaft 7 is rotated by the electric motor 3, the crankpin 7a
Due to the rotational movement and the action of the automatic prevention mechanism 9, the orbiting scroll 5 performs the orbiting movement without rotating. As a result, the wraps 5b, 6 of the orbiting scroll 5 and the fixed scroll 6
The space formed by b and the base plates 5a and 6a decreases its volume while moving to the center, compresses the gas sucked from the suction hole 6c,
Discharge is performed from the discharge hole 6d. The discharged gas is discharged from the discharge pipe 1c after cooling the electric motor 3 through the passage 11 formed in the base plate 6a of the fixed scroll 6 and the frame 8. When the scroll performs a compression action, a force that separates the orbiting scroll 5 and the fixed scroll 6 acts. Therefore, in order to prevent this, the pressure in the back pressure chamber 8c on the back surface of the orbiting scroll is adjusted by the pressure equalizing hole 5d. , Lower than discharge pressure and higher than suction pressure (intermediate pressure).

これにより、旋回スクロールの軸受5cとフレームの軸
受8a′の背圧室8c側端面は上記中間圧力に保たれるの
で、油溜り４の油は固定スクロールに設けられた給油孔
6e,6fおよび旋回スクロールに設けられた給油孔5f,5eを
介して駆動軸の給油孔7cの端部まで吐出圧力と中間圧力
の差圧によって導かれるため、給油孔7c内は油で満たさ
れ、更に給油孔7f,7f′を介して遠心力によって軸受8a,
8a′に給油される。軸受5cはその端面に給油孔5eを介し
て送られた油によって給油される。As a result, the end surfaces of the bearing 5c of the orbiting scroll and the bearing 8a 'of the frame on the back pressure chamber 8c side are kept at the intermediate pressure, so that the oil in the oil sump 4 is supplied to the fixed scroll.
6e, 6f and the oil holes 5f, 5e provided in the orbiting scroll are guided to the end of the oil hole 7c of the drive shaft by the differential pressure between the discharge pressure and the intermediate pressure, so the oil hole 7c is filled with oil. , And further bearings 8a, 7a
8a 'is refueled. The bearing 5c is refueled with the oil sent to the end surface through the oil refilling hole 5e.

以上述べた構造例では旋回スクロール５内に設けた給
油孔5eへの通路をなす給油孔6e,6fを固定スクロール６
の台板6a内に設けたが、第３図に示すようにこれをフレ
ー８内に設けることも可能である。また、第２図と第３
図を組合せて、給油孔6e,6fを固定スクロールの台板6a
およびフレーム８の両方内に設けることもできる。In the above-described structural example, the fixed scroll 6 is provided with the oil supply holes 6e and 6f which are provided in the orbiting scroll 5 and serve as passages to the oil supply hole 5e.
Although it is provided in the base plate 6a, it can be provided in the frame 8 as shown in FIG. Also, FIGS. 2 and 3
By combining the figures, the oil supply holes 6e and 6f are fixed to the base plate 6a of the fixed scroll.
It can also be provided in both the frame 8 and the frame 8.

第４図は給油孔5fと6fとの間のシール性を良くするた
めにシール材12を用いた例を示す。FIG. 4 shows an example in which a sealing material 12 is used to improve the sealing performance between the oil supply holes 5f and 6f.

以上述べた構造例は油溜部４と背圧室8cとの差圧によ
り油を移動させる例について示したが、駆動軸７の軸端
にオイルポンプを設けても良い。In the above-described structural example, the oil is moved by the pressure difference between the oil reservoir 4 and the back pressure chamber 8c, but an oil pump may be provided at the shaft end of the drive shaft 7.

以上の実施例は、スクロール流体機構とこれを駆動す
る駆動軸とを水平に配置したいゆる横形スクロール圧縮
機について説明したが、密閉容器内の上方に電動機部を
配置し、両スクロールを含む圧縮部を下方に配置したタ
イプのスクロール流体機械にも本発明は適用可能であ
る。第５図は、そのようなタイプのスクロール圧縮機に
係る本発明の実施例を示す。The above embodiments have been described with respect to a horizontal scroll compressor in which the scroll fluid mechanism and the drive shaft for driving the scroll fluid mechanism are arranged horizontally, but the electric motor unit is disposed above the closed container, and the compression unit including both scrolls is described. The present invention can also be applied to a scroll fluid machine of the type in which is disposed below. FIG. 5 shows an embodiment of the invention relating to such type of scroll compressor.

第５図において、密閉容器17内の圧縮機構部は、旋回
スクロール12、容器17に固定された固定スクロール13、
自動防止機構14、クランク軸としての駆動軸15、容器17
に固定されたフレーム16からなり、密閉容器17の下方に
配設されている。容器17内にはフレーム16の上方に電動
機18が配設される。In FIG. 5, the compression mechanism portion in the closed container 17 includes an orbiting scroll 12, a fixed scroll 13 fixed to the container 17,
Automatic prevention mechanism 14, drive shaft 15 as crankshaft, container 17
It is composed of a frame 16 fixed to and is arranged below the closed container 17. An electric motor 18 is arranged above the frame 16 in the container 17.

旋回スクロール12は、台板12a上にうず巻き状のラッ
プ12bを有する。また台板12aのラップ12bと反対側には
駆動軸15に設けられた偏心穴に嵌合されている軸12cを
有する。軸12c端部にはオイルポンプ19を有する。固定
スクロール13は台板13a上にうず巻き状のラップ13bを有
し、外周部に吸入孔13cを、中心部に吐出孔13dを有す
る。The orbiting scroll 12 has a spirally wrapped wrap 12b on a base plate 12a. Further, on the side opposite to the lap 12b of the base plate 12a, there is a shaft 12c fitted in an eccentric hole provided in the drive shaft 15. An oil pump 19 is provided at the end of the shaft 12c. The fixed scroll 13 has a spiral wrap 13b on a base plate 13a, a suction hole 13c in the outer peripheral portion, and a discharge hole 13d in the central portion.

フレーム16は駆動軸15を支承する軸受16a,16bを同軸
心に設けているとともに、旋回スクロール12の台板12a
背面を支承するスラスト軸受16c、駆動軸15のスラスト
力を支承するスラスト軸受16d、モータを固定する脚16e
を有する。The frame 16 is provided with bearings 16a and 16b for supporting the drive shaft 15 coaxially and a base plate 12a of the orbiting scroll 12 is provided.
Thrust bearing 16c that supports the rear surface, thrust bearing 16d that supports the thrust force of drive shaft 15, and leg 16e that fixes the motor.
Have.

駆動軸15は一端に偏心穴15aを有し、偏心穴15a内には
旋回スクロールの軸12cを支承する軸受15b、駆動軸のス
ラスト力を支承するスラスト軸受15cを有する。The drive shaft 15 has an eccentric hole 15a at one end, and a bearing 15b that supports the shaft 12c of the orbiting scroll and a thrust bearing 15c that supports the thrust force of the drive shaft are provided in the eccentric hole 15a.

固定スクロール13の台板13aには上下方向の給油孔13e
を有し、前記給油孔13eには、密閉容器底部に導びく油
吸入配管13fが接続されている。また固定スクロールの
台板13aには旋回スクロールの台板12aとの摺動部分に給
油孔13gが設けられている。また旋回スクロールの台板1
2a内には、ポンプ吸入口12dと台板12aの外周部とを連通
する給油孔12eが設けられ、外周部はネジ20で塞がれて
いる。また、台板12aの固定スクロールとの摺動部には
前記給油孔12eと固定スクロールの給油孔13gとを連通す
る給油孔12fが設けられている。旋回スクローの旋回運
動によって給油孔12fの中心は偏心穴15aのクランク半径
すなわち、旋回スクロールの旋回半径と等しい半径で旋
回運動を行なう。一方給油孔12fの孔の半径と給油孔13g
の半径を足した長さは上記旋回半径以上としてあり、従
って、旋回運動中、常時給油孔12fと13gは連通する構造
となっている。またオイルポンプから軸受16bへの給油
孔15dが駆動軸15内に延びている。The base plate 13a of the fixed scroll 13 has a vertical oil supply hole 13e.
An oil suction pipe 13f leading to the bottom of the closed container is connected to the oil supply hole 13e. Further, the base plate 13a of the fixed scroll is provided with an oil supply hole 13g in a sliding portion with the base plate 12a of the orbiting scroll. Also a base plate for orbiting scroll 1
An oil supply hole 12e that connects the pump suction port 12d and the outer peripheral portion of the base plate 12a is provided in 2a, and the outer peripheral portion is closed with a screw 20. Further, a sliding portion of the base plate 12a with respect to the fixed scroll is provided with an oil feeding hole 12f which connects the oil feeding hole 12e and the oil feeding hole 13g of the fixed scroll. Due to the orbiting motion of the orbiting scroll, the center of the oil supply hole 12f performs the orbiting motion with a radius equal to the crank radius of the eccentric hole 15a, ie, the orbiting scroll. On the other hand, the radius of the oil supply hole 12f and the oil supply hole 13g
The sum of the radiuses is equal to or greater than the turning radius, and therefore, the oil supply holes 12f and 13g are always communicated with each other during the turning motion. Further, an oil supply hole 15d from the oil pump to the bearing 16b extends into the drive shaft 15.

旋回スクロールと固定スクロールは互いにラップを内
側に向けて組み合わされ、固定スクロールとフレームと
によって旋回スクロールは挾持されている。密閉容器17
の下方は油溜となっていて固定スクロールに設けた吸入
配管13fは油中に浸っている。密閉容器17は上方にガス
吸入管17a、下方にガス吐出管17bを有し、固定スクロー
ルの吐出孔13dと前記吐出管17bとは吐出配管21を介し連
結されている。The orbiting scroll and the fixed scroll are combined with each other with the wraps facing inward, and the orbiting scroll is held by the fixed scroll and the frame. Closed container 17
An oil reservoir is provided below the suction pipe 13f provided on the fixed scroll is immersed in the oil. The closed container 17 has a gas suction pipe 17a on the upper side and a gas discharge pipe 17b on the lower side, and the discharge hole 13d of the fixed scroll and the discharge pipe 17b are connected via a discharge pipe 21.

前記スクロール圧縮機の動作を述べると、電動機18に
より駆動軸15が回転すると、自転防止機構14により旋回
スクロールは自転せずに旋回運動を行なう。この結果、
旋回スクロールと固定スクロールのラップ12b,13bおよ
び台板12a,13aで形成される空間が中心に移動しつつそ
の容積を減少する。そこで、吸入管17aより吸入された
ガスは電動機18を冷却した後、固定スクロールの吸入孔
13cより吸入され、旋回スクロールと固定スクロールに
より圧縮され、吐出孔13dより吐出され、吐出配管21、
吐出管17bより吐出される。The operation of the scroll compressor will be described. When the drive shaft 15 is rotated by the electric motor 18, the rotation preventing mechanism 14 causes the orbiting scroll to orbit without rotating. As a result,
The space formed by the wraps 12b and 13b of the orbiting scroll and the fixed scroll and the base plates 12a and 13a is moved to the center and the volume thereof is reduced. Therefore, the gas sucked through the suction pipe 17a cools the electric motor 18, and then the suction hole of the fixed scroll.
Inhaled from 13c, compressed by orbiting scroll and fixed scroll, discharged from discharge hole 13d, discharge pipe 21,
It is discharged from the discharge pipe 17b.

各部への給油については、旋回スクロールの軸端部と
これに対面する駆動軸の偏心穴底部15aの間に位置する
オイルポンプ19により、油は、固定スクロールに設けた
吸入配管12f、給油孔13e,13g、旋回スクロールに設けた
給油孔12f,12eを介し、ポンプ19の吸入口より吸い込
み、軸受15b,15c,16a,16b,16c,16dを始めとする各摺動
部に供給される。Regarding oil supply to each part, oil is sucked by an oil pump 19 located between the shaft end part of the orbiting scroll and the eccentric hole bottom part 15a of the drive shaft facing this, and the oil is sucked in by a suction pipe 12f and an oil supply hole 13e. , 13g, through the oil supply holes 12f, 12e provided in the orbiting scroll, and is sucked from the suction port of the pump 19 and supplied to each sliding portion including the bearings 15b, 15c, 16a, 16b, 16c, 16d.

〔発明の効果〕〔The invention's effect〕

以上説明したように本発明によれば、旋回スクロール
の台板に設けた給油孔と固定スクロールの台板又はフレ
ームに設けた給油孔とを介して油溜部と駆動軸受部や摺
動部が連通が可能となり、安定した給油を行うことがで
きる。As described above, according to the present invention, the oil sump portion and the drive bearing portion and the sliding portion are connected via the oil supply hole provided on the base plate of the orbiting scroll and the oil supply hole provided on the base plate or frame of the fixed scroll. Communication is possible and stable refueling can be performed.

【図面の簡単な説明】[Brief description of drawings]

第１図は本発明の一実施例である横型の密閉形スクロー
ル圧縮機の全体構造を示す断面図、第２図は第１図の部
分拡大図、第３図、４図は本発明の他の実施例の部分拡
大図、第５図は本発明の他の実施例である縦型の密閉形
スクロール圧縮機の全体構造を示す断面図である。 １……密閉容器、２……スクロール圧縮機構 ３……電動機、４……油溜り ５……旋回スクロール、5e,5f……給油孔 ６……固定スクロール、6e,6f……給油孔 ７……駆動軸、８……フレーム 12……旋回スクロール、12e,12f……給油孔 13……固定スクロール、13e,13g……給油孔 13f……油吸入配管、15……駆動軸 16……フレームFIG. 1 is a cross-sectional view showing the entire structure of a horizontal hermetic scroll compressor which is an embodiment of the present invention, FIG. 2 is a partially enlarged view of FIG. 1, and FIGS. FIG. 5 is a partial enlarged view of the embodiment of FIG. 5 and FIG. 5 is a sectional view showing the entire structure of a vertical hermetic scroll compressor which is another embodiment of the present invention. 1 ... Airtight container, 2 ... Scroll compression mechanism 3 ... Electric motor, 4 ... Oil sump 5 ... Orbiting scroll, 5e, 5f ... Lubrication hole 6 ... Fixed scroll, 6e, 6f ... Lubrication hole 7 ... … Drive shaft, 8 …… frame 12 …… Orbiting scroll, 12e, 12f …… Oil supply hole 13 …… Fixed scroll, 13e, 13g …… Oil supply hole 13f …… Oil suction pipe, 15 …… Drive shaft 16 …… Frame

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】夫々台板およびそれと一体的な渦巻状ラッ
プからなり且つ両ラップを互に噛み合せて配置された固
定スクロールおよび該固定スクロールに対して自転する
ことなく旋回する旋回スクロールと、旋回スクロールを
固定スクロールに対して旋回駆動するための駆動軸と、
該駆動軸を支持するフレームとを密閉容器内に備え、固
定スクロールの台板と上記フレームとの間に上記旋回ス
クロールの台板を摺動自在に挾持してなるスクロール流
体機械において、固定スクロールの台板内又は上記フレ
ーム内に上記密閉容器内の油溜りから上記固定スクロー
ル又はフレームの旋回スクロールの台板との摺動部に至
る給油孔を形成すると共に、該給油孔に常に連通し且つ
旋回スクロールの中心付近に至る給油孔を旋回スクロー
ルの台板内に形成し、該旋回スクロールの台板内の上記
給油孔に通じる給油孔を駆動軸内に形成したことを特徴
とするスクロール流体機械。1. A fixed scroll comprising a base plate and a spiral wrap integrated with the base plate, and the orbiting scroll and the orbiting scroll which rotate without rotating with respect to the fixed scroll. And a drive shaft for orbiting the fixed scroll,
A scroll fluid machine comprising a frame for supporting the drive shaft in a closed container, and a base plate of the fixed scroll slidably sandwiched between the base plate of the fixed scroll and the frame. An oil supply hole is formed in the base plate or in the frame from the oil sump in the closed container to the sliding portion of the fixed scroll or the orbiting scroll of the frame with the base plate, and the oil supply hole is always communicated with and rotated. A scroll fluid machine characterized in that an oil supply hole reaching near the center of the scroll is formed in a base plate of the orbiting scroll, and an oil supply hole communicating with the oil supply hole in the base plate of the orbiting scroll is formed in a drive shaft. 【請求項２】前記固定スクロールの台板内又はフレーム
内に形成した前記給油孔の前記摺動部における開口の周
囲にシール材を設けた特許請求の範囲第１項記載のスク
ロール流体機械。2. The scroll fluid machine according to claim 1, wherein a sealant is provided around an opening in the sliding portion of the oil supply hole formed in the base plate or frame of the fixed scroll.
JP61281092A 1986-11-26 1986-11-26 Scroll fluid machinery Expired - Lifetime JP2522775B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP61281092A JP2522775B2 (en) 1986-11-26 1986-11-26 Scroll fluid machinery
KR1019870011981A KR910002408B1 (en) 1986-11-26 1987-10-29 Scroll fluid machine
US07/120,098 US4818198A (en) 1986-11-26 1987-11-13 Scroll fluid machine with oil feed passages
DE19873739013 DE3739013A1 (en) 1986-11-26 1987-11-17 ROTATIONAL PISTON MACHINE IN SPIRAL DESIGN

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61281092A JP2522775B2 (en) 1986-11-26 1986-11-26 Scroll fluid machinery

Publications (2)

Publication Number Publication Date
JPS63134890A JPS63134890A (en) 1988-06-07
JP2522775B2 true JP2522775B2 (en) 1996-08-07

Family

ID=17634225

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61281092A Expired - Lifetime JP2522775B2 (en) 1986-11-26 1986-11-26 Scroll fluid machinery

Country Status (4)

Country Link
US (1) US4818198A (en)
JP (1) JP2522775B2 (en)
KR (1) KR910002408B1 (en)
DE (1) DE3739013A1 (en)

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Also Published As

Publication number Publication date
KR880006466A (en) 1988-07-23
JPS63134890A (en) 1988-06-07
US4818198A (en) 1989-04-04
DE3739013A1 (en) 1988-06-09
KR910002408B1 (en) 1991-04-22
DE3739013C2 (en) 1992-04-23

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